Pneumatic tire compactor with water ballast

Abstract

A water ballast for a compactor is disclosed. A ballast tank is installed under a cover plate having a plurality of holes. Through the holes of the cover plate, water falling onto the cover plate drains into the ballast tank. The edges all around the cover plate are slightly angled upwards in order to prevent water from draining out of the cover plate. Also, the water ballast has a ballast drain port on the compactor's frame. The ballast drain port is connected with a drain hole on the ballast tank by a drain hose so that it is used to drain out some water from the ballast tank.

1 . A pneumatic tire compactor with a water ballast system, comprising:
 a frame of which the top is opened;   a ballast tank installed in said frame;   a cover plate of which the edges are placed on the upper rim of said frame and fixed with said frame, said cover plate having a plurality of holes through which said ballast tank opens to the atmosphere;   a ballast drain port installed on the side of said frame for draining water out of said ballast tank; and   whereby water falling onto said cover plate drains into said ballast tank through said holes.   
     
     
         2 . The pneumatic tire compactor as claimed in  claim 1 , wherein said cover plate comprising:
 a plurality of panels; and   a plurality of seamless joints connecting each of the two adjacent panels.   
     
     
         3 . The pneumatic tire compactor as claimed in  claim 1 , wherein said edges around said cover plate are angled upwards and raised. 
     
     
         4 . The pneumatic tire compactor as claimed in  claim 1 , wherein said holes are intensively formed on the middle portion of said cover plate. 
     
     
         5 . The pneumatic tire compactor as claimed in  claim 1 , wherein said holes are only formed on the middle portion of said cover plate. 
     
     
         6 . The pneumatic tire compactor as claimed in  claim 1 , further comprising:
 a water level sensor installed inside of said ballast tank and sending a signal to an operation cabin when the level of the water in said ballast tank is in excess of a set value.   
     
     
         7 . The pneumatic tire compactor as claimed in  claim 1 , further comprising:
 a drain hose having one end connected with a drain hole formed on the side of said ballast tank and the other end connected with said ballast drain port.   
     
     
         8 . The pneumatic tire compactor as claimed in  claim 1 , wherein said ballast drain port is formed on the lower side of said frame. 
     
     
         9 . The pneumatic tire compactor as claimed in  claim 2 , wherein said panels are disposed as being inclined, whereby water on said cover plate flows down along said inclined panels. 
     
     
         10 . The pneumatic tire compactor as claimed in  claim 9 , further comprising:
 protrusions formed along inside periphery of said frame's upper rim, said protrusion forming an incline angle from the opposite ending sides to the middle portion, and said middle portion being flat; and   wherein said panels are supported by said protrusions.